PROBLEM TO BE SOLVED: To avoid deficient husk treatment at a rear side of a threshing cylinder while suppressing increase of driving load at front side of the threshing cylinder.SOLUTION: There is provided a threshing part 3 provided with a threshing chamber 8 receiving a treating object from a front feeding port 8a and a threshing cylinder 11 placed in the threshing chamber 8 in a direction to direct a rotary shaft 15 in a longitudinal direction of the cylinder and threshing the threshing object according to rotary driving in a prescribed direction. The threshing cylinder 11 is provided with: a plurality of bar members 28 parallelly arranged in circumferential direction interposing specific gaps and a plurality of rod-shaped threshing teeth 10 protruding from the bar members 28 interposing a prescribed spaces in the direction of the rotary axis the rod-shaped threshing teeth 10 contain rod-shaped threshing teeth 10A protruded outward from the threshing cylinder along the radial direction of the threshing cylinder and free from slant angle in rotational direction of the threshing cylinder and rod-shaped threshing teeth 10B having a slant angle in rotational direction of the threshing cylinder and rod-shaped threshing teeth 10 positioned at a front side of the threshing chamber 8 are the rod-shaped threshing teeth 10B having a slant angle.COPYRIGHT: (C)2013,JPO&INPIT【課題】扱胴の前側における駆動負荷の増大を抑制しつつ、扱胴の後側における穀処理不足を回避する。【解決手段】前方の供給口8aから処理物が供給される扱室8と、回転軸15が前後を向くように扱室8内に配置され、所定方向の回転駆動に応じて処理物の脱穀処理を行なう扱胴11とを備える脱穀部3であって、扱胴11は、周方向に所定の間隔を隔てて並列状に配置される複数の桟部材28と、回転軸方向に所定の間隔を隔てて桟部材28に突設される複数の棒状扱歯10とを備え、棒状扱歯10は、扱胴径方向に沿って扱胴外方に突出し、扱胴回転方向に対して後退角のない棒状扱歯10Aと、扱胴回転方向に対して後退角のある棒状扱歯10Bとを含み、扱室8の前側に位置する棒状扱歯10を後退角のある棒状扱歯10Bとした。【選択図】図3
